Rotary motor operated by gas or hydrocarbons.



310.333,355. i l PATBNTBD AUG. 13, 1907. M. J., J., 3. E. 3 J. A. 3331.33.

ROTARY MOTOR OPERATED BY GAS OR HYDROGARBON/S. 3'

APPLIOATION FILED 33331.27. 130e.

3 SHEETS-SHEET 1.

. W. W mf No. 863,355. Y PATBNTED AUG.13, 1907.

M. J., J., J. E. J J. A. BURLAT.

ROTARY MOTOR OPBRATEOBY GASOR HYDROOARBONS. APPLIOATION FILED SEPT. 27.1906.

3 SHEETS-SHEET 2.

Wizzeses y l EJ/enfans A PATBNTED AUG. 13, 1907. M. J., J.y J. E. & J. A. BURLAT. ROTARY MOTOR OPERATED BY GAS OB. HYDROOARBONS.

APPLICATION FILED SEPT.,27.1906.

S SHEETS-SHEET 3.

UNITED sTAvT Es PATENT OEEIOE.

MATHIEU JOSEPH BURLAT, JOANNE's B UELAT, JoANN-Es EUGENE EUELAT, AND JOSEPH ANTOINE BUELAT, or VILLEURBANNE, EEANOE. Y.

ROTARY MOTOR OPERATED BY GAS on IIYDEOOAEEONS.

Specificationofl Letters Patent.

Patented Aug.' 13, 1907.

Application filed September 27, 1906. Serial No. 336,492.

To all whom it may concern:

Be it known that we, MATHIEU JOSEPH BUELAT,

- JOANNS BUELAT, .TOANNs EUGENE BUELAT, and

following is a specification.

Y The rotary motor to which" the present invention relates is based on'the following known principle. If a circle is caused to roll inside another circle of double the diameter the hypocycloididescribed is a straight line. This principle has previously been applied to steam motors but not to explosion motors owing to difficulties in the ignition regulation and valve control and owing to the impossibility 'of producing a motor sufficiently-balanced to permit rotation at high speed.

The above cited inconveniences. are obviated by the particular anangementand combination ofthe parts of the motor hereinafter described and claimed and illustrated in the annexed drawing, in which Figure l is a longitudinal section of the motor. Fig. 2" is a diagram showing thesupply of electric current to the sparking plugs of each cylinder. Fig. 3 is a detail l tion on line lJf-i of 1,' and on the right hand side an,

elevation of the iront of the motor. Figs. 5, l6, 7 and 8 are diagrams showing the dierent positions of the valve controlling cam. l y

Y The motor is mounted on a frame forming the lower casing and to which are rigidly fixed two cross-bars lA and B forming the supports for said motor. v The said. crossbars each carry atrunnion C, D respectively serving as bearingsfor the rotary casing D1 and are further bored at eccentric points E and F in Order to form a bearing at each end, for the crank shaft a.. Each crank pin b and c of said shaft is secured to a connecting-rod b1 cl connecting two Oppositely arranged pistons b2 c2 "about thetrunnions C and D of the fixed cross-bars.

The crank shaft o is mounted eccontrically with regard to the center of the casing this ecccntricity being equal to a quarter stroke of the pistons or to the distance-between the axes of the shaft a and crank pin b. Owing to this arrangement the axes of the crank pins t and' c always coincide with the axes of the cylinders which permits of interconnecting two opposite pistons and of dispensing with obli que connecting rods. A The whole motor is rotatable and Owing to the arrangement of the shaft a as described said shaft revolves at twice the speed of the cylinders. lThe valves c of '.lhe levers Z Z1 Zflsarepivoted'on aides e (see Fig. 3) mounted `on the casing ofthe motor and each carries on a pin f at its upper end a crescent shaped sliding bl. ck

`maximum of admission. Fig. 6- illustrates the opening .and in Fig. 8 the cam is sufficiently moved so that the said cylinders are operated by means of levers l, Z1, Z2,

Z3 mounted on the casing, the movement of these levers is effected by means of cams G H provided with grooved ways such grooved ways'being on each cam a double loop.

h, rotatable in a socket f 1 of said lever in orderto permit it to follow the different curves of the cam grooves aforesaid to be traversed. 4The said levers on arriving below or in line with the spindles'i of the valves, raise or open same when the curve of the cam groove causes a movement to takeplace so as to 'extend the distance between the socket f of the lever l and the center o of the motor.

Two examples may be given of the Operation of the grooved cam. l

Firstly, the cam is fixed and the groove-has a double 'motor is rotating a to and fro motion in accordance with the greatest and smallest radius which the curve ofthe groove takes with regard'to the center o of rotation of the motor or of the turning part (Figs. '5 to 8). It is convenient to give to the groove such curve that the greatest radius, on a semi-circumference, terminates the stroke ofthe valve. In this manner the cam controls the four valves. y l Secondly, if the cam is mounted so that its position can alter or be altered by being mounted so that it can S5 oscillate on an eccentric pivot k to the extent for instance of the angle between the dotted lines c-'n and `c-jo ofthe drawing, and that lthe greatest radius of the be less. lf on" the other hand the great radius of the curve lies on the side of the pivot lc by causing the cam to oscillate the complete closing of the valve takes place before the end of stroke of the piston and at points which vary according to the nature of the curve of the groove. The cam thus controls the action of the four valves and allows of regulating the opening movement of said valves.

Fig. 5 illustrates the cam in position for eecting the.

6i the valves diminished as compared to Fig. 5.. In g VFig. 7 the opening of the valves is still further lessened 1.05 valves are'closed. The movementof the cam'can be effected by means of an endless worm 'm `or by an eccentric, cam, or any other suitable means. It can be seen that by this means in accordance with the regulation of the opening oi the valves, the speed of the moti' can be regulated during action. I

In the annexed drawing the opposite valves are not represented on the same axis and together theyoccupy a tangential position. This arrangement has been adopted so as to avoid the sliding o'i the lever under the valve while it raises it. The cam H is'iiixed and the stroke of the valves is constant. The springs oi the valves are calculated so as to act as regulators to the motor, and allowing-oi a certain maximum speed which it vcan not exceed. The sparking plugsconsist of a central insulated rod J which carries at one end a star K of nickel. v The rod .l is insulated-by means of a covering of mica which incases it for its whole length. Surrounding this coveringis a series oi mica collars or Washers Lf which are compressed and held in position by a metallic washer and a nut M. The mica collars have exteriorly when in position a conical form and the whole is held in positionin the casing without the aid of screwv threading. Small openings N are provided to allow of the outlowof oil which may penetrate to the plug. The current at high tension reaclies'the plugs by two fixed sectors O, P, insulated'from the'iranie and which receive the current from a magneto X or from an ac cumulator coil. The sparking plugs pass at a distance of about one millimeter from these keys and take the. current during the revolution of the motor so as to efiect the explosion at the proper moment.

The carbnreted gases pass into the chamber Q oi the casing. by means of openings in the trunnion D. They are then led under the valves through pipes d which distributethem. The escaping gases are led to a circular passage-way R formed of two portions 4one of which is fixed being attached to a pipe leadingto, the outside; the other ha'li being connected to the cylinders and rotating .with the same. The connection oi vthe' two portions is made by means of iianges R1 of the one portion engaging in guides of the other. The starting of the motor is donc as in motors generally by means of a 'handlefor starting the crankshaft.

- The ily Wheel which can be utilized for driving a coup ling belt has its arms or spokes constructed so as to have .a suction effect' on the atmosphere. It thus renews during the action of the motor the air inclosing the cylinders thus acting to cool said cylinders. For lubricating the rotary parts the oil from the lubricator` 'is conducted to the crank shaft a through the channels S and S1 and to the trunnions C and D through the channels side. When it arrives against the collar oi thecrank shaft lthe centrifugal force projects it to the bottom oi the opening U .whence it is led on to the crank pins through the channel V. It is then projected on to the pistons lubricating same and also the cylinders.

The oil which acts for lubricating the trunnions C and D passes out at each side, some runs in the casing and serves or lubricating the cylinders; the remainder passing through the ports Y or Z and lubricates the grooves ofthe cams G and H. The motor is described as having four cylinders arranged at angles oi 90 but it could be provided with sixarranged at What we claim as our invention and desire to secure by Letters Patentoi 'the United States isz- 1.' In a rotary gas or hydrocarbon ymotor the combination of a plurality of cylinders located radially about and adapted to revolve around a center, inlet and exhaust valves communicating with said cylinders, oscillatable cams having double leccentric grooves, slidable blocks engaging said grooves, levers in'connection with said blocks adapted to operate the valves during the rotation of the .cylinders and means for adjusting the position of said ,extent equalvto a quarter stroke of thepistons aforesaid, 'inlet and exhaust valves communicating `with said-cylinders, eccentrically grooved cams, and means engaging the groovesin said cams for operating the valves during the rotation of the cylinders, substantially as described.

3, In a rotary gas or hydrocarbon motor, the combination of a plurality of cylinders. located radially about and adapted to revolve about a center, pistons working in said cylinders, connecting rods secured' to said pistons, a

crank shaft to which said rods are coupled in pairs, said crank shaft havlng its axis eccentric to said center equal to a quarter stroke of the pistons, inlet' and exhaust valves communicating with the cylinders, oscillatable cams having double-eccentric grooves,y slidable blocks engaging said grooves, levers Jln connection withsaid blocks adapted to operate the valves during therevolution of the cylinders, means for `adjusting the position of said cams tol regulate the strokeof the valves,sparkingI plugslocated in the cylinders, a'source of electric current and stationary conductive -sectors adapted to transmit the'current fromsaid source of electricityto the sparking plugs'dnring'the revolution of the' cylinders aforesaid, substantially as describedf In witness whereof we have signed this specification ln the presence of'two witnesses. v

MATHIEU JOSEPH BURLAT'. 'JOANNS BURLAT.

.IoANNiis EUGENE BURLA'I, JOSEPHANTOINE BURLAT. Witnesses:

, v l 'JEAN GERMAIN,

i HIPPOLYTE VILLELONGUIH. 

